IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0261006
(2010-05-12)
|
등록번호 |
US-8657085
(2014-02-25)
|
우선권정보 |
JP-2009-117918 (2009-05-14) |
국제출원번호 |
PCT/JP2010/058053
(2010-05-12)
|
§371/§102 date |
20120109
(20120109)
|
국제공개번호 |
WO2010/131682
(2010-11-18)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
▼
An air damper capable of stabilizing a damping force of the air damper is obtained. When a rod member (16) is pulled out of a cylinder member (20), a suction member (60) hits against the other side surface (56) of a piston member (30) so as to close an air passage (28), and an airflow path communica
An air damper capable of stabilizing a damping force of the air damper is obtained. When a rod member (16) is pulled out of a cylinder member (20), a suction member (60) hits against the other side surface (56) of a piston member (30) so as to close an air passage (28), and an airflow path communicating between an air chamber (26) and an outside is only orifice portions (42). On the other hand, when the rod member (16) is pushed into the cylinder member (20), the suction member (60) moves away from the other side surface (56) of the piston member (30) so as to open the air passage (28). Consequently, compared to a conventional structure in which an O-ring rolls by a friction force with an inner peripheral surface of a cylinder so as to open or close the air passage, the air passage (28) can be opened and closed as intended so as to be capable of stabilizing the damping force.
대표청구항
▼
1. An air damper, comprising: a cylinder member having a cylindrical shape and a bottom plate;a piston member movably provided inside the cylinder member, and forming an air chamber between the piston member and the bottom plate of the cylinder member, the piston member having an orifice portion com
1. An air damper, comprising: a cylinder member having a cylindrical shape and a bottom plate;a piston member movably provided inside the cylinder member, and forming an air chamber between the piston member and the bottom plate of the cylinder member, the piston member having an orifice portion communicating the air chamber and an outside, and an air passage in a center thereof;a seal member disposed in a concave portion formed in an outer periphery of the piston member, and sealing the piston member and an inner peripheral surface of the cylinder member;a rod member passing through the air passage formed in the piston member;a push-in portion provided in the rod member, the push-in portion hitting against the piston member when the rod member is pushed in toward the bottom plate of the cylinder member, to thereby move the piston member toward the bottom plate of the cylinder member; anda suction member provided in an end portion of the rod member, the suction member closing the air passage by hitting against the piston member when the rod member is pulled out of the cylinder member, and opening the air passage by moving away from the piston member when the push-in portion moves the piston member toward the bottom plate of the cylinder member by pushing the rod member into the cylinder member,wherein the orifice portion is formed between an outer peripheral surface of the piston member and an inner peripheral surface of the seal member. 2. An air damper according to claim 1, wherein the piston member comprises a plurality of components so as to be capable of being assembled from an external side of the rod member, and the rod member comprises a band portion in which a plurality of connecting components is mutually connected to be capable of swaying. 3. An air damper according to claim 1, wherein a cross-sectional surface of the seal member is circular, and an inner width size of the concave portion in which the seal member with the circular cross-sectional surface is disposed is made longer than a diameter size of the seal member for a crushing portion of the seal member. 4. An air damper according to claim 3, wherein the seal member is an O-ring. 5. An air damper according to claim 1, wherein the rod member comprises a band portion in which a plurality of connecting components is mutually connected so as to be capable of swaying. 6. An air damper according to claim 1, wherein the rod member comprises an elastic deformation portion which can elastically deform in a curved shape in a determined direction. 7. An air damper according to claim 1, wherein the piston member comprises a pair of semicircular members each including: a protruding portion protruding in a perpendicular direction to the rod member, and having a triangle claw to protrude in a parallel direction to the rod member; andan insertion opening disposed in the perpendicular direction to the rod member to receive the protruding portion, and having a locking opening disposed in the parallel direction of the rod member to communicate with the insertion opening,wherein the rod member is disposed between the pair of semicircular member, the protruding portion is inserted through the insertion opening and the triangle claw is locked in the locking opening so that the pair of semicircular members are locked to each other and the piston member is assembled with the rod member therebetween, andthe air passage is located between the rod member and the piston member. 8. An air damper according to claim 1, further comprising an urging member urging the piston member toward the bottom plate of the cylinder member so that the urging member urges the rod member when the rod member is pulled out of the cylinder member. 9. An air damper, comprising: a cylinder member having a bottom plate;a piston member disposed slidably inside the cylinder member, and forming an air chamber between the piston member and the bottom plate of the cylinder member, the piston member having an air passage in a center thereof;a seal member disposed in a concave portion formed in an outer periphery of the piston member, and sealing the piston member and an inner peripheral surface of the cylinder member;an orifice portion formed between an outer peripheral surface of the piston member and an inner peripheral surface of the seal member to communicate the air chamber and outside;a rod member passing through the air passage formed in the piston member with a space therearound;a push-in portion disposed on the rod member; anda suction member disposed at an end portion of the rod member,wherein the air damper is structured so that when the rod member is moved toward the bottom plate of the cylinder, the push-in portion abuts the piston member and the suction member moves away from the piston member to allow the air to pass through the air passage, and when the rod member is moved away from the bottom plate of the cylinder, the push-in portion is not abutting the piston member and the suction member abuts the piston member to close the air passage, andthe orifice portion is capable of communicating the air chamber when the rod member is moved toward and away from the bottom plate of the cylinder.
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